graph_config.c

#include <stdio.h>
#include <errno.h>
#include <string.h>
 
#include <graph.h>
#include <graph_config.h>
 
int graph_make_config(int mode, int interlace, int ffmd, int x, int y, int flicker_filter, char *config)
{
 
    // Save the current mode value.
    switch (mode)
    {
 
        case GRAPH_MODE_NTSC:           strcpy(config, "GRAPH_MODE_NTSC:");     break;
        case GRAPH_MODE_PAL:            strcpy(config, "GRAPH_MODE_PAL:");          break;
        case GRAPH_MODE_HDTV_480P:      strcpy(config, "GRAPH_MODE_HDTV_480P:");    break;
        case GRAPH_MODE_HDTV_576P:      strcpy(config, "GRAPH_MODE_HDTV_576P:");    break;
        case GRAPH_MODE_HDTV_720P:      strcpy(config, "GRAPH_MODE_HDTV_720P:");    break;
        case GRAPH_MODE_HDTV_1080I:     strcpy(config, "GRAPH_MODE_HDTV_1080I:");   break;
        case GRAPH_MODE_VGA_640_60:     strcpy(config, "GRAPH_MODE_VGA_640_60:");   break;
        case GRAPH_MODE_VGA_640_72:     strcpy(config, "GRAPH_MODE_VGA_640_72:");   break;
        case GRAPH_MODE_VGA_640_75:     strcpy(config, "GRAPH_MODE_VGA_640_75:");   break;
        case GRAPH_MODE_VGA_640_85:     strcpy(config, "GRAPH_MODE_VGA_640_85:");   break;
        case GRAPH_MODE_VGA_800_56:     strcpy(config, "GRAPH_MODE_VGA_800_56:");   break;
        case GRAPH_MODE_VGA_800_60:     strcpy(config, "GRAPH_MODE_VGA_800_60:");   break;
        case GRAPH_MODE_VGA_800_72:     strcpy(config, "GRAPH_MODE_VGA_800_72:");   break;
        case GRAPH_MODE_VGA_800_75:     strcpy(config, "GRAPH_MODE_VGA_800_75:");   break;
        case GRAPH_MODE_VGA_800_85:     strcpy(config, "GRAPH_MODE_VGA_800_85:");   break;
        case GRAPH_MODE_VGA_1024_60:    strcpy(config, "GRAPH_MODE_VGA_1024_60:");  break;
        case GRAPH_MODE_VGA_1024_70:    strcpy(config, "GRAPH_MODE_VGA_1024_70:");  break;
        case GRAPH_MODE_VGA_1024_75:    strcpy(config, "GRAPH_MODE_VGA_1024_75:");  break;
        case GRAPH_MODE_VGA_1024_85:    strcpy(config, "GRAPH_MODE_VGA_1024_85:");  break;
        case GRAPH_MODE_VGA_1280_60:    strcpy(config, "GRAPH_MODE_VGA_1280_60:");  break;
        case GRAPH_MODE_VGA_1280_75:    strcpy(config, "GRAPH_MODE_VGA_1280_75:");  break;
        default:                        strcpy(config, "GRAPH_MODE_AUTO:");     break;
 
    }
 
    // Save the current interlacing mode.
    switch (interlace)
    {
 
        case GRAPH_MODE_NONINTERLACED:  strcpy(config, "GRAPH_MODE_NONINTERLACED:");        break;
        case GRAPH_MODE_INTERLACED: //Fall through
        default:            strcpy(config, "GRAPH_MODE_INTERLACED:");       break;
 
    }
 
    // Save the current field mode.
    switch (ffmd)
    {
 
        case GRAPH_MODE_FRAME:  strcpy(config, "GRAPH_MODE_FRAME:");        break;
        case GRAPH_MODE_FIELD:  //Fall through
        default:        strcpy(config, "GRAPH_MODE_FIELD:");    break;
 
    }
 
    // Save status of flicker filter.
    switch (flicker_filter)
    {
 
        case GRAPH_ENABLE:  strcpy(config, "GRAPH_ENABLE:");        break;
        case GRAPH_DISABLE: //Fall through
        default:        strcpy(config, "GRAPH_DISABLE:");   break;
 
    }
 
    // Save the current screen offset.
    sprintf(config, "%d:",x);
    sprintf(config, "%d:",y);
 
    // End function.
    return 0;
 
}
 
int graph_set_config(char *config)
{
    char *temp0, *temp1;
    int mode, interlace, ffmd;
    //int x, y; //Not used
    int flicker_filter;
 
    // Extract the mode config value.
    temp0 = config; temp1 = strtok(temp0, ":"); temp0 += strlen(temp1) + 1;
 
    // Parse the mode config value.
    if (strcmp(temp1, "GRAPH_MODE_AUTO"        ) == 0) { mode = GRAPH_MODE_AUTO;        } else
    if (strcmp(temp1, "GRAPH_MODE_NTSC"        ) == 0) { mode = GRAPH_MODE_NTSC;        } else
    if (strcmp(temp1, "GRAPH_MODE_PAL"         ) == 0) { mode = GRAPH_MODE_PAL;         } else
    if (strcmp(temp1, "GRAPH_MODE_HDTV_480P"   ) == 0) { mode = GRAPH_MODE_HDTV_480P;   } else
    if (strcmp(temp1, "GRAPH_MODE_HDTV_576P"   ) == 0) { mode = GRAPH_MODE_HDTV_576P;   } else
    if (strcmp(temp1, "GRAPH_MODE_HDTV_720P"   ) == 0) { mode = GRAPH_MODE_HDTV_720P;   } else
    if (strcmp(temp1, "GRAPH_MODE_HDTV_1080I"  ) == 0) { mode = GRAPH_MODE_HDTV_1080I;  } else
    if (strcmp(temp1, "GRAPH_MODE_VGA_640_60"  ) == 0) { mode = GRAPH_MODE_VGA_640_60;  } else
    if (strcmp(temp1, "GRAPH_MODE_VGA_640_72"  ) == 0) { mode = GRAPH_MODE_VGA_640_72;  } else
    if (strcmp(temp1, "GRAPH_MODE_VGA_640_75"  ) == 0) { mode = GRAPH_MODE_VGA_640_75;  } else
    if (strcmp(temp1, "GRAPH_MODE_VGA_640_85"  ) == 0) { mode = GRAPH_MODE_VGA_640_85;  } else
    if (strcmp(temp1, "GRAPH_MODE_VGA_800_56"  ) == 0) { mode = GRAPH_MODE_VGA_800_56;  } else
    if (strcmp(temp1, "GRAPH_MODE_VGA_800_60"  ) == 0) { mode = GRAPH_MODE_VGA_800_60;  } else
    if (strcmp(temp1, "GRAPH_MODE_VGA_800_72"  ) == 0) { mode = GRAPH_MODE_VGA_800_72;  } else
    if (strcmp(temp1, "GRAPH_MODE_VGA_800_75"  ) == 0) { mode = GRAPH_MODE_VGA_800_75;  } else
    if (strcmp(temp1, "GRAPH_MODE_VGA_800_85"  ) == 0) { mode = GRAPH_MODE_VGA_800_85;  } else
    if (strcmp(temp1, "GRAPH_MODE_VGA_1024_60" ) == 0) { mode = GRAPH_MODE_VGA_1024_60; } else
    if (strcmp(temp1, "GRAPH_MODE_VGA_1024_70" ) == 0) { mode = GRAPH_MODE_VGA_1024_70; } else
    if (strcmp(temp1, "GRAPH_MODE_VGA_1024_75" ) == 0) { mode = GRAPH_MODE_VGA_1024_75; } else
    if (strcmp(temp1, "GRAPH_MODE_VGA_1024_85" ) == 0) { mode = GRAPH_MODE_VGA_1024_85; } else
    if (strcmp(temp1, "GRAPH_MODE_VGA_1280_60" ) == 0) { mode = GRAPH_MODE_VGA_1280_60; } else
    if (strcmp(temp1, "GRAPH_MODE_VGA_1280_75" ) == 0) { mode = GRAPH_MODE_VGA_1280_75; }
    else
    {
 
        mode = GRAPH_MODE_AUTO;
 
    }
 
    // Read the interlace config value.
    temp1 = strtok(temp0, ":"); temp0 += strlen(temp1) + 1;
 
    // Parse the interlace config value.
    if (strcmp(temp1, "GRAPH_MODE_NONINTERLACED" ) == 0) { interlace = GRAPH_MODE_NONINTERLACED; } else
    if (strcmp(temp1, "GRAPH_MODE_INTERLACED" ) == 0) { interlace = GRAPH_MODE_INTERLACED; }
    else
    {
 
        interlace = GRAPH_MODE_INTERLACED;
 
    }
 
    // Read the field mode config value.
    temp1 = strtok(temp0, ":"); temp0 += strlen(temp1) + 1;
 
    // Parse the field mode config value.
    if (strcmp(temp1, "GRAPH_MODE_FRAME" ) == 0) { ffmd = GRAPH_MODE_FRAME; } else
    if (strcmp(temp1, "GRAPH_MODE_FIELD" ) == 0) { ffmd = GRAPH_MODE_FIELD; }
    else
    {
 
        ffmd = GRAPH_MODE_FIELD;
 
    }
 
    // Read the flicker_filter config value.
    temp1 = strtok(temp0, ":"); temp0 += strlen(temp1) + 1;
 
    // Parse the flicker_filter config value.
    if (strcmp(temp1, "GRAPH_DISABLE" ) == 0) { flicker_filter = GRAPH_DISABLE; } else
    if (strcmp(temp1, "GRAPH_ENABLE"  ) == 0) { flicker_filter = GRAPH_ENABLE;  }
    else
    {
 
        flicker_filter = GRAPH_ENABLE;
 
    }
 
    // Disable flicker filter if the mode is noninterlaced.
    if (interlace == GRAPH_MODE_NONINTERLACED)
    {
 
        flicker_filter = GRAPH_DISABLE;
 
    }
 
    // Read the x config value.
    temp1 = strtok(temp0, ":"); temp0 += strlen(temp1) + 1;
 
    // Parse the x config value.
    // x = (int)strtol(temp1,NULL,10); //Not used
 
    // Read the y config value.
    temp1 = strtok(temp0, ":"); temp0 += strlen(temp1) + 1;
 
    // Parse the y config value.
    // y = (int)strtol(temp1,NULL,10); //Not used
 
    graph_set_mode(interlace,mode,ffmd,flicker_filter);
    // End function.
    return 0;
 
}
 
int graph_load_config(char *filename)
{
 
    FILE *infile; char config[512];
 
    // Open the config file.
    if ((infile = fopen(filename, "r")) == NULL)
    {
 
        return -ENOENT;
 
    }
 
    // Read the config file contents.
    if (fread(config, 1, sizeof(config), infile) != sizeof(config))
    {
 
        fclose(infile);
        return -EIO;
 
    }
 
    // Close the config file.
    if (fclose(infile) != 0)
    {
 
        return -1;
 
    }
 
    // Set the current mode config information.
    return graph_set_config(config);
 
}
 
int graph_save_config(char *filename)
{
 
    FILE *outfile; char config[512];
 
    // Get the current mode config information.
    graph_get_config(config);
 
    // Open the config file.
    if ((outfile = fopen(filename, "w")) == NULL)
    {
 
        return -ENOENT;
 
    }
 
    // Write the config file contents.
    if (fwrite(config, 1, strnlen(config, sizeof(config)), outfile) == strnlen(config, sizeof(config)))
    {
 
        fclose(outfile);
        return -EIO;
 
    }
 
    // Close the config file.
    if (fclose(outfile) != 0)
    {
 
        return -1;
 
    }
 
    // End function.
    return 0;
 
}